Failed to deploy application since yesterday

Since yesterday I been having problems to deploy a simple app I created using the Mobile Cloud boilerplate, the strange thing is that I get different error messages even if I don´t change anything on the app, for example, the first try I get this error:

The application with the given id does not exist

Then I tried again, without modifying the app, and I get this error:

Staging error: cannot get instances since staging failed

Then I tried again:

500 Error: Failed to establish a backside connection

If I ran cf logs <app_name> --recent, the only significant message are this: